Other Mandatory Spending

I have been wondering what the “Other Mandatory Programs” are. It shows up in the  federal budget under the “Mandatory Programs” section – its value somewhere between Social Security and Medicare. The 2012 budget allocates $598B for the other mandatory programs. But I googled for a while and found:

Other categories of mandatory spending:

Individually, each of these programs don’t amount to much, but combined they are very big (as this CBO presentation shows).